Water-heater unit



Aug. 16,1927.

L. R. MENDELVSON WATER HEATER mm Filed Sept 22. 1926 alumna.

Patented Aug. 16, 192 7.

UNITEDVSTATESJ PATENT OFFICE.

LOUIS R. MENDELSON', or CLEVELAND, OHIO, nssrsnoaro THEY HOTSTREAM HEATER comm, or CLEVELAND, onro, A-QORBORATION or 0310.

WATER-HEATER UNIT.

Application filed September 22, 1926. Serial No. 137,045.

This invention relates to heater units of a type adapted for either insertion in the fire box of a house heating furnace or boiler, or for multiple arrangement in a jacket above a burner, either of these uses being in connection with the usual tank for supplying hot water for domestic use.

The invention comprises generally improvements of the unit described and illustrated in Patent No. 1,063,994, issued June 10th, 1913, to L. B. Mendelson; and has for its object the provision of openings for lat- Bral pipe connections as well as for vertical pipe connections, the vertical or lateral openings being adapted for optional use depending upon the installation conditions, the openings not used being conveniently plugged.

The exact nature of the invention will be readily noted from the following description taken in connection with the accompanying drawings in which Fig. 1 is a plan view of the unit partially in section showing the interior construction thereof and Fig. 2 is a side elevation of the same partially. in section along the line 2-2 of Fig. 1.

The unit is a single casting 1 comprising generally a pair of concentric integral spiders 2, the radial members or arms 3 of which are hollow, broadened at their ends and extend from hollow hubs, those of'the upper spider overlapping those of the lower spider in staggered relation whereby the end of each member of each spider communicates with two of the members of the other spider; this with the exception to be noted hereafter.

Aligned concentric openings 4 and 4 are provided leading upward of the hub of the top spider and downward of the hub of the lower spider respectively.

In order to provide the lateral openlngs referred to, one end of one of the members of each of the spiders is brought out to a face 5, a web 6 being provided between the apertures 7 and 7 in place of the commun cating openings in the corresponding position with respect to the other members, whereby a circuitous path including at least one member of each spider is the shortest internal path between the openings of 7 and 7.

All of the .four openings are threaded as indicated for pipe connections.

The unit is intended for installation in a position wherein the openings 4 and 4 are aligned vertically. Where the most convenient connections for the installation desired are vertical, the pipe connections are made with the openings 4 and 4, the openings 7 and 7 being closed by suitable standard plugs; where the most convenient arrangement involves connection with horizontal pipes, the pipes are threaded into the openings 7 and 7", the openings 4 and 4 being plugged.

Obviously with my improved construc tion as disclosed the employment of the heating unit is possible in a wide variety of installations which would be impossible were the connections limited toa vertical arrangement. Moreover by the provision of the additional lateral. openings coring in casting of the unit is more conveniently accomplished, allowing a more perfect run ofcastings to be produced. I

, What I. claim is:

1. A heating unit comprising a pair of hollow spiders, the outer ends of the members of each of said spiders broadened and overlapping. those of the other spider, ad- I jacent members, one of each'spider, provided with openings in a common face, each remaining member of each spider communicating with two members of the other spider.

2. A heating unit comprising a pair of hollow spiders, the outer ends of the members of each of said spiders broadened and overlapping'those of the other spider, adjacent members, one of each spider,provided with openings in a common face, each remaining member of each spider communicating with two members of the other spider, and axial openings outward of said spiders.

3. A heating unit comprising a pair of ooaxial hollow spiders, the outer ends of the members of each of said spiders broadened and overlapping those of the other spider, adjacent members, one of each spider, provided with openings in a common face, each remaining member of each spider commu nicating with two members of the other spider, and axial openings outward of said spiders.

i. A heating unit comprising a pair of hollow spiders, the outer ends of the members of each of said spiders broadened and overlapping those of the other spider, adjacent members, one of each spider, provided with openings in a common face, each re maining member of each spider oommuni- 1o eating with two members of the other spider, and axial openings outward of said spiders, all of said openings being screw threaded for selective plugging or connection in a heating system.

In testimony whereof I hereby affix my signature.

Louis B, MENDELsoN. 

